Laurence Castera
type: MusicGroup
popularity: 15
followers: 1620
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdca7a68548536652ea55bf1b6d193f99a4d59951452623611da20f656b193e0f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebb8753b-82b2-43ee-b435-206e406d7ee4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ebb8753b-82b2-43ee-b435-206e406d7ee4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ebb8753b-82b2-43ee-b435-206e406d7ee4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdca7a68548536652ea55bf1b6d193f99a4d59951452623611da20f656b193e0f","name":"Laurence Castera","registered_at":"2026-06-15T05:18:03Z","symbol":"NIM0693950","token_address":"0xa9aa9a60b159842bb184ff231540a906221f982a","type":"artist","uuid":"ebb8753b-82b2-43ee-b435-206e406d7ee4"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca7a68548536652ea55bf1b6d193f99a4d59951452623611da20f656b193e0f. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebb8753b-82b2-43ee-b435-206e406d7ee4.json and https://artists.proofprofile.net/proofs/artist/ebb8753b-82b2-43ee-b435-206e406d7ee4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0xdca7a68548536652ea55bf1b6d193f99a4d59951452623611da20f656b193e0f","name":"Laurence Castera","registered_at":"2026-06-15T05:18:03Z","symbol":"NIM0693950","token_address":"0xa9aa9a60b159842bb184ff231540a906221f982a","type":"artist","uuid":"ebb8753b-82b2-43ee-b435-206e406d7ee4"}
album: L'horloge
  type: MusicAlbum
  date published: 2017-02-03
album: Le bruit des mots
  type: MusicAlbum
  date published: 2017-02-17
  track: Frôler ta peau
    type: MusicRecording
    duration: PT3M33S
    duration ms: 213306
    explicit: false
    by artist: Laurence Castera
    in album: Le bruit des mots
      type: MusicAlbum
      date published: 2017-02-17
    isrc code: CAF661600399
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T23:46:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1aaa711ed215cc588753ff6c5d727c8cef7f1a928e1193a8dca0750b9e475e5a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959080
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959080
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAF661600399
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T02:47:24Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa711ed215cc588753ff6c5d727c8cef7f1a928e1193a8dca0750b9e475e5a. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:47:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAF661600399.
      date published: 2026-07-22T02:47:24Z
    audio: Frôler ta peau
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 147.514
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.423
      additional property: Energy
        type: PropertyValue
        value: 0.135
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.509
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.135
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.12
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.295
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Le bruit des mots
  type: MusicAlbum
  date published: 2017-02-17
album: Jouer le jeu
  type: MusicAlbum
  date published: 2019-02-20
album: Les hauts lieux
  type: MusicAlbum
  date published: 2019-03-22
album: Les hauts lieux
  type: MusicAlbum
  date published: 2019-04-12
album: De l'autre côté (Session live)
  type: MusicAlbum
  date published: 2020-04-24
album: Rivière
  type: MusicAlbum
  date published: 2025-11-05
track: Je retourne à la maison

Je retourne à la maison
type: MusicRecording
duration: PT3M20S
duration ms: 200397
explicit: false
by artist: Meghan Oak
by artist: Laurence Castera
in album: Dans la lune
  type: MusicAlbum
  date published: 2023-04-28
genre: auteur-compositeur-interprete-quebecois
isrc code: CAPDY2200004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T06:57:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c4c0b579840029b281686eb12c7e7372cd2ede6843c0ec5f8cc461a57cdb6c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAPDY2200004
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c0b579840029b281686eb12c7e7372cd2ede6843c0ec5f8cc461a57cdb6c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAPDY2200004.
  date published: 2026-06-13T15:41:10Z
audio: Je retourne à la maison
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.277
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.517
  additional property: Energy
    type: PropertyValue
    value: 0.401
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.744
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.199
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.816
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major